* chore(security): implement input validation across authentication and workspace forms
- Add OWASP-compliant autocomplete attributes to all auth input fields
- Create centralized validation utilities blocking injection-risk characters
- Apply validation to names, display names, workspace names, and slugs
- Block special characters: < > ' " % # { } [ ] * ^ !
- Secure sensitive input fields across admin, web, and space apps
* chore: add missing workspace name validation to settings and admin forms
* feat: enhance validation regex for international names and usernames
- Updated regex patterns to support Unicode characters for person names, display names, company names, and slugs.
- Improved validation functions to block injection-risk characters in names and slugs.
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